MPEG-DASH流媒体数字版权管理系统的设计与实现

Design and implementation of MPEG-DASH streaming media digital rights management system

HTTP动态自适应流媒体技术面向智能手机、平板电脑、智能电视机以及PC等多种智能终端,可以为用户提供优质的视频体验,因此已经广泛应用在了互联网视频传输服务中。目前MPEG-DASH协议综合了现有主流移动流媒体协议的基本架构,对所有平台提供了良好的兼容性,能够有效的解决目前存在的HTTP自适应技术跨平台使用问题,但就版权管理而言,还非常不完善,很容易被拷贝和传播,因此重点研究如何对基于MPEG-DASH协议的流媒体进行数字版权保护。首先研究了MPEG-DASH流媒体技术,然后针对数字内容安全,研究了如何对MPEGDASH流媒体内容进行加密保护,最后结合目前互联网视频数字版权管理系统方案,设计并实现了基于MPEGDASH协议的流媒体数字版权管理系统。

HTTP dynamic adaptive streaming technology-DASH（Dynamic Adaptive Streaming over HTTP）for smart phones,tablet PCs,smart TVs,PC and other intelligent terminals can provide users with high-quality video experience.It has been widely used in The Internet video transmission service.The MPEG-DASH protocol combines the basic architecture of the existing mainstream mobile streaming protocols,provides good compatibility for all platforms,and effectively solves the current cross-platform usage problem of HTTP adaptive technologies,but it is very imperfect and easy to be copied and disseminated in terms of copyright management.Therefore,the focus of this paper is how to protect MPEG-DASH streaming media.This paper first studies the MPEG-DASH streaming media technology,and then studies how to encrypt the MPEG-DASH streaming media content for digital content security.Finally,this paper designs and realizes the MPEG-DASH streaming media digital rights management system combining with the current Internet video digital rights management system.